Patent US3961393A successfully refreshed from Google Patents.
US3961393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swimming pool cleaning apparatus
Assignee: Individual
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Filing: 1975-07-23
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Granted: 1976-06-08
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Expires: 1995-07-23
Abstract
Abstract A wheel supported pool cleaner which picks up floor debris from the pool and induces it to move upwardly into a collector by an improved vortex-forming water jet action system.
Inventors
- 👤 Andrew L. Pansini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:25
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/14; E04H4/16; E04H4/1618
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
116 words
A pool cleaner comprising a housing having an upper open-ended conduit part and a lower flange part, wheels carried by the flange part to space the latter from a pool floor, a water delivery ring disposed near the lower end of the conduit part, a number of discharge ports in said ring, said ports being uniformly oriented to project jets of water in alike paths extending inwardly and upwardly toward each other and up above the upper end of the conduit part in a spiralled pattern whereby there is induced within the pool water within the conduit part an upwardly ascending, swirling current of water flow, and a water inlet conduit connected to the delivery ring.
Claim 2
Dependent Claim
116 words
A pool cleaner comprising a housing having an upper open-ended conduit part and a lower flange part, wheels carried by the flange part to space the latter from a pool floor, a water delivery ring disposed near the lower end of the conduit part, a number of discharge ports in said ring, said ports being uniformly oriented to project jets of water in alike paths extending inwardly and upwardly toward each other and up above the upper end of the conduit part in a spiralled pattern whereby there is induced within the pool water within the conduit part an upwardly ascending, swirling current of water flow, and a water inlet conduit connected to the delivery ring.
Claim 3
Dependent Claim
129 words
A pool cleaner comprising a housing having an upper open-ended conduit part and a lower flange part, wheels carried by the flange part to space the latter from a pool floor, water supply means for the pool cleaner consisting of a water delivery ring and a water inlet conduit connected to the delivery ring, said delivery ring being disposed near the lower end of the conduit part, a number of discharge ports in said ring, said ports being uniformly oriented to project jets of water in alike paths extending inwardly and upwardly toward each other and up above the upper end of the conduit part in a spiralled pattern whereby there is induced within the pool water within the conduit part an upwardly ascending, swirling current of water flow.
Claim 4
Dependent Claim
129 words
A pool cleaner comprising a housing having an upper open-ended conduit part and a lower flange part, wheels carried by the flange part to space the latter from a pool floor, water supply means for the pool cleaner consisting of a water delivery ring and a water inlet conduit connected to the delivery ring, said delivery ring being disposed near the lower end of the conduit part, a number of discharge ports in said ring, said ports being uniformly oriented to project jets of water in alike paths extending inwardly and upwardly toward each other and up above the upper end of the conduit part in a spiralled pattern whereby there is induced within the pool water within the conduit part an upwardly ascending, swirling current of water flow.
References Cited (Backward Citations)
US3444575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-08 | 1979-12-08 | 1980-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-08 | 1983-12-08 | 1984-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-08 | 1987-12-08 | 1988-06-08 | $7700.00 | Window Closed / Lapsed |